1st Year NotesBiology class 11th

1st year biology Chapter 10 Kingdom Animalia

1st year biology Chapter 10 Kingdom Animalia Question an Answers

Short and Simple Question an Answer

Q.1 What is flame cell?
Ans. It is a cup-shaped cell with a bunch of cilia which work in its lumen. It is concerned with excretion. Flame cells are usually connected together by canals which ultimately open to the exterior of the animal.
Q.2 What are tetrapods?
Ans. All the animals having four limbs are called tetrapods. This super class following classes:
(i) Class Amphibia (ii) Class Reptilia
(iii) Class Aves (iv) Class Mammalia
Q.3 Name the glass sponge of antarctica which is more than a metre tall. cher yom
Ans. Its name is Scolymastra joubini.
Q.4 What are nematocysts?
Ans. The nematocysts are the organs of offence and defence in the coelenterates.
Q.5 Quote examples of jawless fishes?
Ans. These are lampreys and hagfishes.
Q.6 Give example of a legless amphibion?
Ans. It is the Caecilian..
Q.7 Who proposed the word mammal?
Ans. Linnaeus proposed the word mammal.
Q.8 How many aortic arches are found in birds and mammals?
Only a single aortic arch is found, right in birds and left in mammals.
Q.9 Name a phylum which is exclusively marine?
Ans. It is phylum Echinodermata and Oxidaria.
Q.10 How do annelids respire?
Ans. The annelids respire through skin.
Q.11 Quote an example of a free-living flat worm?
Ans. Planaria is a free-living flat worn.
Q.12 Name the intermediate host in the life-cycle of tapeworm?
Ans. It is pig or cattle.
Q.13 What is the coelom of arthropods known as?
Ans. The coelom of arthropods is known as the haemocoel.
Q.14 What is the cause of malaria?
Ans. The cause of malaria is a protozoan known as the Plasmodium.
Q.15 What does the term ‘calcareous’ mean?
Ans. The term calcareous means “made up of calcium carbonate”.
Q.16 What are the molluscs with coiled shells known as?
Ans. These are called gas tropods.
Q.17 Why has the name craniata been also given to Vertebrata?
Ans. Since the vertebrates posses cranium, the Vertebrata is also known as Craniata.
Q.18 Quote examples of bony fishes?
These are trout, perch plaice (flat fish).
Q.19 Name two flight less (running) birds?
Ans. These are ostrich and kiwi.
Q.20 What is the other name of external ear of mammals?
Ans. The external ear of mammals is also called pinna.
Q.21 Name the early mammal-like reptile which was found as fossil in Texas. now.com?
Ans. Its name is Varanope.
Q.22 What is hydrostatic skeleton?
Ans. Arrangement in animal or organ conferring rigidity by distension with fluid as movement of Oligochaeta, Polychaeta and Nematoda.
Q.23 What is book lung?
Ans. It is a respiratory organ of some air-breathing arachnids, consists of projections containing blood and arranged like leaves of a book in a depression of body wall.
Q.24 Where is the food masticated in birds?
The food in birds is masticated in a thick muscular structure known as the gizzard.
Q.25 Name the protective embryonic membranes of reptiles?
These are the amnion, allantios and chorion.
Q.26 Distinguish oviparous animals from viviparous ones?
The animals which lay eggs are called oviparous e.g., birds while those which give birth to the young ones are known as viviparous. e.g., mammals.
Q.27 The teeth of some mammals (asmon) are known in two sets. Name them?
Ans. These are deciduous or milk set and the permanent set.
Q.28 In which geological period did the mammals become dominant?
Ans. The mammals became dominate in cenozoic period.
Q.29 How is malaria spread?
Ans. Malaria is spread by the bite of the female Anopheles mosquito.
Q.30 Differentiate between Anamniotes and Amniotes?
Ans. Anamniotes: The animals without fetal membrane e.g., Cyclostomata, Chondrichthyes, Osteichthyes and Amphibia known as anamniotes.
Amniotes or Amnota: The animals with fetal membranes (aminon, allantois & chorion) e.g., Reptilia, Aves and Mammals, are called amniotes.

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